Electric Aircraft Propulsion Patent Landscape 2026
Electric Aircraft Propulsion Patent Landscape in 2026
Electric aircraft propulsion is a concentrated, growth-stage field with 5,604 patent families on record, dominated by established aerospace OEMs and an emerging cohort of eVTOL startups. The United States anchors the filing landscape, while General Electric Co holds the leading position by a substantial margin over all other applicants.
General Electric leads a concentrated top tier with eVTOL challengers closing fast
General Electric Co holds the top position with 835 patent families, followed by Pratt & Whitney Canada Corp at 648 and Archer Aviation Inc at 469 — a ranking that reflects both legacy propulsion expertise and the rapid IP buildout of next-generation eVTOL entrants.
The top five filers account for 46% of the combined output of the hundred largest filers, indicating a moderately concentrated field where a handful of incumbents and well-funded startups set the technical agenda. A visible gap separates the top three from the mid-tier cluster beginning with Denso Corp at 200 patent families.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | General Electric Co | 835 | |
| 2 | PRATT & WHITNEY CANADA CORP | 648 | |
| 3 | Archer Aviation Inc | 469 | |
| 4 | Beta Air LLC | 321 | |
| 5 | Denso Corp | 200 | |
| 6 | Rolls-Royce PLC | 196 | |
| 7 | RTX Corp | 175 | |
| 8 | The Boeing Co | 175 | |
| 9 | Hamilton Sundstrand Corp | 164 | |
| 10 | Textron Innovations Inc | 148 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Rolls-Royce Corp | 105 | |
| 12 | Rolls-Royce North American Technologies Inc | 102 | |
| 13 | Bell Helicopter Textron Inc | 91 | |
| 14 | Joby Aero Inc | 76 | |
| 15 | ROLLS ROYCE DEUT LTD & CO KG | 62 | |
| 16 | Airbus SAS | 57 | |
| 17 | Safran Helicopter Engines | 55 | |
| 18 | Airbus Operations SAS | 55 | |
| 19 | Aurora Flight Sciences Corp | 55 | |
| 20 | Sichuan Aerofugia Technology Development Co Ltd | 44 |
General Electric’s lead is reinforced by deep co-filing activity across its subsidiary network — GE Germany, GE Avio, and GE Poland — suggesting a coordinated global IP strategy rather than a single-market position. Pratt & Whitney Canada’s collaboration with United Technologies Advanced Projects and Hamilton Sundstrand signals a similarly integrated approach within the RTX family.
Filing counts for 2024–2026 are understated due to patent publication lag and should not be read as a slowdown; the competitive picture for those years will sharpen as disclosures clear the examination pipeline. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Multi-year expansion continues despite eased annual volume since the 2022 peak
Annual filing data from 2017 to 2026 traces the field’s acceleration through the growth stage, while the technology composition chart reveals where engineering effort is concentrated and where adjacent branches remain comparatively sparse.
Annual filing trend
Filings rose from 383 in 2017 to a peak of 856 in 2022, then eased to 837 in 2023 and 763 in 2024. The 2025–2026 figures (442 and 38 respectively) are heavily understated by publication lag and should not be interpreted as a real decline. On a three-year rolling basis the field shows 33% growth versus the prior equivalent window, confirming a growth-stage trajectory.
↗ Hover for values · click a bar to ask EurekaTechnology composition
Aircraft Equipment (B64D) and Aeroplanes & Helicopters (B64C) dominate the branch mix, reflecting the primary focus on airframe-integrated propulsion architectures. Electric Vehicle Propulsion (B60L), Electric Motors & Generators (H02K), and Gas-Turbine Plants (F02C) form a secondary cluster, pointing to cross-domain technology transfer from automotive and conventional turbine engineering. Branches such as Unmanned Aerial Vehicles (B64U), Power Supply & Grid Systems (H02J), and Batteries & Fuel Cells (H01M) are present but comparatively sparse relative to the core airframe classes.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Hybrid electric aircraft propulsion system with mo…
A hybrid electric aircraft propulsion system at least includes a motor with induction effect to drive a propeller or propulsion fan. The motor is directly supplied from the electrical output of a generator. The generator is driven by a variable speed engine and as such the generator has a output frequency proportional to the speed of the engine. A… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | System and methods for implementing regional air t… | 386 |
| 2 | Aircraft, preferably unmanned | 300 |
| 3 | Parallel Hybrid-Electric Propulsion Systems for Un… | 275 |
| 4 | Long range hybrid electric airplane | 262 |
| 5 | Hybrid-electric aircraft, and methods, apparatus a… | 242 |
| 6 | Hybrid Propulsion Vertical Take-Off and Landing Ai… | 229 |
| 7 | Aircraft using turbo-electric hybrid propulsion sy… | 191 |
| 8 | Rotary wing vehicle | 177 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the IP structure means for R&D investment decisions
The combination of a growth-stage lifecycle, a tiered competitive structure, active intra-group co-filing, and a US-dominant jurisdiction profile shapes where new entrants can realistically compete and where incumbents are entrenched.
Growth stage, multi-year expansion with eased annual pace since 2022
The field is classified as Growth: recent three-year filing volume sits well above the prior equivalent window, representing 33% growth. Annual volume peaked in 2022 at 856 patent families and has moderated since, though publication lag makes the most recent years appear softer than they are. New entrants still have a realistic window to establish differentiated IP positions before the field transitions to maturity.
Growth stageTop-tier incumbents and well-funded startups dominate; mid-tier is fragmented
The top five filers — General Electric Co, Pratt & Whitney Canada Corp, Archer Aviation Inc, Beta Air LLC, and Denso Corp — account for 46% of the output of the hundred largest filers. A clear tier gap separates these leaders from the mid-tier, which includes Rolls Royce PLC, RTX Corp, and The Boeing Co in the 175–196 range. Fragmentation below that level offers opportunities for focused players to carve out defensible niches in specific sub-technologies.
Moderate concentrationCo-filing is predominantly intra-group; cross-industry partnerships are rare
The most active co-filing pairs are General Electric Co with GE Germany (32 joint families) and Pratt & Whitney Canada Corp with United Technologies Advanced Projects (24 joint families). GE also co-files actively with GE Avio (12 families) and GE Poland (7–8 families). Rolls Royce PLC collaborates with Rolls-Royce Corp and Rolls-Royce North American Technologies (9–12 families each). Denso Corp and its affiliate Soken Inc co-filed on 4 families, representing one of the few cross-sector (automotive-to-aerospace) collaboration signals in the data.
Intra-group dominantUS-centric filing with significant EPO and PCT coverage; Asia under-indexed
The United States leads by a wide margin with 2,664 patent records, followed by Europe via EPO (1,165) and WIPO PCT (429). Canada (337) and Germany (343) reflect the home-office filings of Pratt & Whitney Canada and the Rolls Royce / GE European subsidiaries. China (370) and Japan (158) are present but under-weighted relative to those countries’ overall aerospace manufacturing capacity, suggesting the field’s IP center of gravity remains firmly transatlantic.
US-centricGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| General Electric Co | General Electric Deutschland Holding GmbH | 32 |
| Pratt & Whitney Canada Corp | United Technologies Advanced Projects Inc | 24 |
| General Electric Co | GE Avio S.r.l. | 12 |
| Rolls-Royce PLC | Rolls-Royce Corp | 12 |
| Pratt & Whitney Canada Corp | Hamilton Sundstrand Corp | 9 |
| Rolls-Royce PLC | Rolls-Royce North American Technologies Inc | 9 |
| General Electric Co | GE Aerospace Poland Sp. z o.o. | 8 |
| General Electric Co | GE Poland Sp. z o.o. | 7 |
| Denso Corp | Soken Inc | 4 |
| Rolls-Royce PLC | Rolls-Royce Deutschland Ltd & Co KG | 4 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
GE anchors the field; Archer and Beta Air show explosive eVTOL IP buildout
The leader board splits between legacy propulsion incumbents with deep turbomachinery IP and agile eVTOL startups that have assembled large portfolios rapidly. Momentum data reveals diverging trajectories within each tier.
General Electric Co
General Electric Co leads with 835 patent families concentrated in Aircraft Equipment (B64D 27 being the single largest sub-class at 733 families), reflecting its hybrid-electric and turbofan-integration programs. Momentum is positive at +19% in the recent three-year period versus the prior window, indicating sustained but measured IP investment consistent with a mature program advancing toward certification rather than exploratory filing.
families: 835Archer Aviation Inc
Archer Aviation Inc ranks third overall with 469 patent families but shows the most dramatic momentum of any scaled filer: 17× the filing rate of the prior three-year window, coming from a small prior base. Its technology focus centers on B64C 29 (VTOL aeroplanes, 269 families) and B64D 27 (aircraft power equipment, 251 families), positioning it squarely in the eVTOL segment. Beta Air LLC (321 families, 3.1× momentum) follows a similar profile, while Denso Corp (200 families) entered the corpus as a new entrant, signaling automotive powertrain suppliers moving into the space.
families: 469| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| General Electric Co | 151 | ▲ +19% |
| Pratt & Whitney Canada Corp | 214 | ▼ -38% |
| Archer Aviation Inc | 302 | ▲ 17× vs prior 3-yr |
| Beta Air LLC | 233 | ▲ 3.1× vs prior 3-yr |
| Denso Corp | 178 | ▲ new entrant |
| Rolls-Royce PLC | 84 | ▼ -16% |
| Bell Helicopter Textron Inc | 1 | ▼ -98% |
| The Boeing Co | 51 | ▼ -7% |
Under-served branches adjacent to the dominant airframe-propulsion core
Several IPC branches are present in the corpus at comparatively low share relative to the dominant B64D and B64C classes. These represent areas where the prior-art density is lower and where technical differentiation may be achievable, though entry feasibility depends on the applicant’s existing capabilities.
H02K · Electric Motors & Generators
H02K accounts for 640 patent records — a 4% share — despite electric motors being a core enabling component of every electric propulsion architecture. The relative sparsity suggests that aircraft-specific motor design (high power density, thermal management in low-pressure environments, fault tolerance under flight loads) remains less covered than the system-level aircraft equipment class. Teams with rotating-machine expertise could pursue differentiated IP here, particularly on lightweight high-speed permanent-magnet and superconducting motor topologies for aviation duty cycles.
Search this in Eureka →H01M · Batteries, Cells & Fuel Cells
H01M holds 326 patent records — a 2% share — in a corpus where energy storage is a primary performance limiter for electric aviation range and payload. Aircraft-rated cell chemistries, battery management under altitude and temperature extremes, and hydrogen fuel-cell stacks for aviation duty represent areas with plausible technical value and regulatory pull. The low prior-art density relative to the automotive battery space may offer freedom-to-operate advantages for applicants willing to define aircraft-specific performance and safety requirements in their claims.
Search this in Eureka →How leaders differ by technology route across IPC branches
Strength of each leader across the main technology routes.
| Player | B64D 27 · Aircraft equipment | B64C 29 · Aeroplanes & helicopters | B64D 31 · Aircraft equipment | B64C 27 · Aeroplanes & helicopters | B64C 11 · Aeroplanes & helicopters |
|---|---|---|---|---|---|
| General Electric Co | Strong · 733 | Emerging · 68 | Moderate · 174 | Emerging · 27 | Emerging · 32 |
| Pratt & Whitney Canada Corp | Strong · 441 | Absent | Strong · 234 | Emerging · 25 | Moderate · 144 |
| Archer Aviation Inc | Strong · 251 | Strong · 269 | Moderate · 96 | Moderate · 65 | Moderate · 80 |
| Beta Air LLC | Strong · 186 | Strong · 157 | Emerging · 27 | Absent | Absent |
| Denso Corp | Strong · 177 | Moderate · 40 | Absent | Moderate · 71 | Absent |
| Bell Helicopter Textron Inc | Absent | Strong · 75 | Emerging · 22 | Strong · 124 | Moderate · 30 |
| Rolls-Royce PLC | Strong · 164 | Absent | Emerging · 27 | Absent | Moderate · 43 |
Frequently asked questions
The corpus stands at 5,604 patent families in scope. Filing activity grew from 383 families in 2017 to a peak of 856 in 2022, with the most recent years understated due to publication lag.
General Electric Co leads with 835 patent families, followed by Pratt & Whitney Canada Corp (648) and Archer Aviation Inc (469). These three together represent a significant share of the top-100 filers’ combined output.
The United States is the dominant filing jurisdiction with 2,664 patent records, followed by Europe via the EPO (1,165) and WIPO PCT (429). Canada (337), Germany (343), and China (370) form the next tier.
The field is assessed as Growth stage. Three-year rolling filings are 33% above the prior equivalent window. Annual volume eased from its 2022 peak, but recent years are further understated by publication lag, so the underlying pace of new investment remains active.
Archer Aviation Inc shows a momentum of 17× its prior three-year filing rate, and Beta Air LLC shows 3.1× growth — both from small prior bases, consistent with eVTOL startups executing aggressive IP-buildout programs. Denso Corp entered as a new entrant, signaling cross-sector interest from automotive powertrain suppliers.
Electric Motors & Generators (H02K) and Batteries, Cells & Fuel Cells (H01M) each hold comparatively low shares of patent records relative to the dominant airframe-integration classes, despite being critical enabling technologies. These branches may offer differentiation opportunities for applicants with rotating-machine or energy-storage expertise targeting aviation-specific performance requirements.
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Disclaimer. This page is generated from PatSnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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